dpierce Posted December 16, 2022 Report Share Posted December 16, 2022 I just started working at this facility and was tasked with trying to get into a PLC/HMI because the original installer left and ghosted the company. No password. I am familiar with some companies having a master password or secret button that allows you to reset. Even a default password would help. From what I have read though, this seems like an open source program and was programed from scratch by the original installer. So probably doesnt have one. I thought I would try though. Thank you for any help. Donovan Pierce Entertainment Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted December 16, 2022 MVP 2021 Report Share Posted December 16, 2022 You didn't mention the model of the PLC, but I'm assuming you've downloaded the software and tried to upload the program. Unfortunately, you are basically screwed on this. There is no way to get into a Unitronics PLC and upload program without the password. The only thing you can do is start over and blow out the existing program with a new one. Joe T. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted December 16, 2022 MVP 2021 Report Share Posted December 16, 2022 17 hours ago, dpierce said: an open source program Technically, it's not....it's just free from the PLC's maker. Unlike many other PLC makers, who can charge a fortune for the means to program their units. Further to Joe's comment, you might be lucky. Check if the unit has an SD card in place, there might be a copy of the program on there that you can access. Otherwise, yes, you're screwed. cheers, Aus Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted December 17, 2022 MVP 2021 Report Share Posted December 17, 2022 13 hours ago, Ausman said: Technically, it's not....it's just free from the PLC's maker. Unlike many other PLC makers, who can charge a fortune for the means to program their units. Perhaps I'm wrong, but I thought the OP was referring to the program in his PLC. Quote Link to comment Share on other sites More sharing options...
dpierce Posted December 17, 2022 Author Report Share Posted December 17, 2022 Thanks all for the replies. We ended up just gutting the system out and went old school analog. I am new to this product so going to play with the one we have now. Guess first I need to download the program. Again, thanks for the help and info. Quote Link to comment Share on other sites More sharing options...
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